No DTR With Linux 2.6.25.1

[R.L. Horn]

I recently installed the abovementioned version of the kernel and found 
that minicom is no longer raising DTR.  I'm not certain if this is a 
kernel bug or feature (or just misconfiguration), but the attached patch 
to sysdep1.c (version 2.3, but it applies to CVS with a bit of fuzz) seems 
to fix things for me.
-------------- next part --------------
--- sysdep1.c.old	2007-10-10 15:18:20.000000000 -0500
+++ sysdep1.c	2008-05-06 06:29:15.000000000 -0500
@@ -115,7 +115,13 @@
       sleep(sec);
       ioctl(fd, TIOCSDTR, 0);
     }
-
+#elif defined (TIOCMBIS) && defined (TIOCMBIC) && defined (TIOCM_DTR)
+    int modembits = TIOCM_DTR;
+    ioctl (fd, TIOCMBIC, &modembits);
+    if (sec>0) {
+	sleep (sec);
+	ioctl (fd, TIOCMBIS, &modembits);
+    }
 #else /* TIOCSDTR */
 #  if defined (POSIX_TERMIOS) && !defined(_HPUX_SOURCE)